Hey whats up, I'm looking to upgrade to a larger hdd. I've heard lots of good things about both. I know they come really close with good warranties, power efficiency and running quite. Are these companies both in a tie breaker? I want to know TPU's opinion?

I can deal with either brand. WD has been good to me recently I had a drive on the last month of a 5yr warranty go bad. I had a new replacement in less than 2 weeks and I did the slow mail mine out then they mail out the replacement when they get my old drive. Very satisfied with customer support there at the moment.
I guess if they were equal cost for the same space it would be better to know what your main purpose or wants for the drive was. One may be faster in some areas than the other brand or quieter etc.

I have a lot of drives from both and I don't really notice anything. I would grab Western Digital tho because I like how they're twice as big as all my seagates! And I've had 4 500gb WD in my server for almost 2 years now with no hitch. I move stuff constantly off of them and so does my dad.

I grabbed a Seagate 250gb 7200.10 RPM for my rig because the 7200.10's were the best at the time!

I have both in my system(both are 160GB so a total of 320GB), both are great, sometimes the Seagate can make this semi loud pitch noise, but i have seen no ill effects. And my Western Digital has been running fine to.

I had bought 2--500 gig Seagate 7200.11's .....one died the first week....the other showed signs of impending failure.....replaced them with 2--500 gig WD Blacks and no issues as of yet...both are smooth and fast.

I like wd until the last one brought a couple of years ago 160 gig crapped out sent in for replacement used about 1 year. Just replaced it with a Hitachi 500 gig, will not buy another wd,
never had a problem with Seagate.

Ive had both Brands, sorta 50/50 use with both, i found my older WD 120 was a faster, quieter, but hotter running HDD, compared to the seagate that i feel are a little slower and noisier for sure, but run cooler. I allways would beat my m8s Brand new computer in loading and mine was 2yrs old hehe.

Only reason im running seagate at the moment was because of price and warranty (was 5yrs), and the place i bought all my computer parts only stocked Seagates.

After the issues that seagate have been having lately and there warranty dropped im going to go back to WD this time and see how they go. Ive had one WD fail on me, well it was dead on arrival and ive had one seagate also start to die on me to, So its 50/50 so far. Allways had a soft spot for WD's

I've had my mix of drives but I would have to say I've owned alot of WD's compared to any other brand. Right now I'm using two WD 1Tb Black editions and they are quite, not to hot, and plenty fast. Soon I'll be getting another one to setup a RAID 5 but anyways, WD gets my vote.

This really isn't the correct way to ask what HDD manufacture to go with. Both manufactures offer one drive that is better than its counter and Vice versa.

Take for example the large TB+ HDD's. If you want a HDD that is just for storage maybe the new 2TB HDD would be better but...they are the "green" drives so they are not as fast as Seagates 1.5TB then again they;re the "green" ones so they're more efficient.

Another example would be any of the ES HDD's from Seagate compared to those AAKS from Western Digital.

It all depends on what you want and what they will be used for.
Good Luck!
Regards